Centeris to work with industry leaders on cross-platform server administration and identity management solutions.

BELLEVUE, Wash. - November 14, 2006 - Centeris Corporation, a pioneer in Microsoft ® Windows ® and Linux server integration and management technology, today announced that it has joined the Microsoft Interop Alliance, which was designed to enable various information technology companies to collaboratively improve interoperability with Microsoft technologies. Centeris is one of the first organizations to join the Alliance, and will work with the Alliance community to help solve interoperability issues with its flagship product, Likewise 2.0, a server management solution that helps organizations to manage Windows and Linux on the same network.

"The Alliance demonstrates Microsoft's firm commitment to interoperability, which has become a major issue as more organizations are using or experimenting with multiple operating systems on their networks," said Barry Crist, chief executive officer of Centeris. "As one of the founding members in the Alliance, we have a great opportunity to share our expertise in administration and identity management allowing companies to integrate Linux and non-Windows systems with Active Directory.  We appreciate Microsoft's invitation to join this community and look forward to helping more companies manage their heterogeneous environments."

Likewise allows systems administrators to seamlessly manage networks that are simultaneously running Windows and Linux without needing specialized staffing or additional IT resources.  System administrators can use Likewise to integrate Linux with Microsoft Active Directory for centralized management of Linux servers and workstations, configuring machines to perform single sign-on, and set up Linux Apache servers to authenticate intranet Web browser users against Active Directory permissions information.

"As an Alliance partner, Centeris will have a unique opportunity to showcase its products and services to a community of companies that are interested in pushing forward interoperability issues and technologies," said Sam Rosenbalm, business development manager, Microsoft. "Centeris will also have the opportunity to work with other companies in testing multi-vendor interop scenarios. We look forward to engaging Centeris in future interoperability discussions with Microsoft and our Alliance community."

About the Interop Vendor Alliance

Formed in 2006, the Interop Vendor Alliance is an industry wide group working to identify and share opportunities to better connect people, data and diverse systems through better interoperability with Microsoft systems and to jointly market interoperability solutions of its members. Founding members include AMD, BEA Systems, Business Objects, CA, The Carbon Project, Centeris Corporation, Citrix Systems Inc, GXS, IP Commerce Inc, JNBridge, KERNEL Networks, Levi, Ray & Shoup Inc, Microsoft Corporation, NEC, Network Appliance, Novell, Q4bis, Quest Software, Siemens Enterprise Communications, Software AG, SugarCRM, Sun Microsystems, Symphony Services, Xcalia, and XenSource. Additional information about the Interop Vendor Alliance can be found on its Web site at http://www.interopvendoralliance.org.

About Centeris

Centeris solutions give customers the freedom to choose the server platform best suited to their business needs. Our flagship product, Centeris Likewise, makes it easy for midsized and enterprise companies running Microsoft Windows networks to configure and manage Linux servers. Likewise provides familiar Windows-based management tools and improved integration of Windows and Linux servers, helping companies achieve the full benefits of running mixed networks. Centeris Corporation is a Bellevue, WA-based software company funded by leading venture capital firms Ignition Partners, Intel Capital and Trinity Ventures. Centeris is led by senior executives from technology companies such as Microsoft, F5 Networks, EMC and Mercury. For more information, visit www.centeris.com.